The first chart shows us the “percent of U.S. population by age group”.As opposed tobin contrast to 1950, 2000, and 2050, we can see the persentage of older people is increasing. Meanwhile,the cost on health care will increase.

The second chart gives us the information about the difference between wealthier and poorer contries. From the four comprison(population with access to safe water and sanitation;annual halth spending per person;population per doctor;and persent of children dying befor age 5), we know that the two world have much leeway in health care.